Improvement in rotary pumps



spending parts.'

UNITED vSTATES PATENTv OFFICE.

lEORGl W'. HEALD AND LORENZO DQSISCO, 0F BAL-DVVINSVILLE, N. Y.

IMPROVEMENT IN aoTARY PUMPS.

Specification forming part of Letters Patent N o. 106,581, dated Angustll. 137,0.

To all whom 'it may "concern:

Be it known that we, GEORGE W. HEALD and LORENZO D. SISCO, of Bald-winsville, inA

the county ofOuondaga yand State of New York, have invented a new and 'useful Improvement in Rotary Pumpsand we do herebyldeclarethat the following is a full, clear,

and exact description thereof, which will ena-- ble others skilled in the art-to make anduse the same, reference beinghad to the accompanying drawings, forming part of this specification. This invention relates to new and useful improvements in rotary pumps, whereby they are made morcnseful and more durable than they have hitherto been; and it consists in connecting a lifting or suction pump thereto for primingor illingthe same; and iu Ione or more abutmeuts or partitions in the waterchannel of the seroll-.c'linder of the pump for equalizing the side p ssure on the piston; and in acurve at the discharge end of the hollowrevolving piston-arms; in the manner of connecting the piston-arm to the hub, and also a projecting collar, in combination with the piston, as will be hereinafter more fully described.

-j In th'e accompanying sheetof drawings,Fig ure 1V represents a vertical longitudinal section of a rotary pump provided with the suc-` tlon-prlmer and embracing our other improve' ments. Fig. 2 is a vertical section of Fig. 1 on the line .e showing the revolving` piston, the

curvein the discharge ends of the hollow arms, the form of the scroll-cylinder, and the position ofthe abutments therein.

Similar letters of vreference indicate corre- AA represent the rotary pump cylinder. B is the discharge-orifice thereof. C is the rotating piston-wheel, with three V(more or less) hollow curved arms, D, havingV short curves E at their discharge ends, for giving the wa-ter discharged into the curved crescent-shaped water-space F an additional'impetustoward the mouth B of the pump.

F is a web on one side of the piston-Wheel, `by means of which the hollow arms are con- `nested into the hub. rlhis arrangementleaves the center of thespiston-Wheel entirely open andunobstructed on one side. A Gis an abutment onpartition which divides the broader half of the water channel F into two parts,vas seen in the drawings. This partition prevents the side pressure on the piston occasionedI by thc greater body of Water on this side of the pump. There may be m'ore than one of these abutments in the water-space,

and they may be arranged therein as maybe f ouud to be most effectual to produce the desired result.

H represents the priming-pump. This is a simple lifting-pump, the barrel of which is c ounected with the inner half, A', oi" the rotary `pump-cylinder by the tubular section I.

J- s the shaft of thev rotary pump, to which the rotatiu g piston-wheel 'C is attached. This shaft has its inner bearing on thebridge-tree K, within thesection I. The part 4A' of the cylinderhas a broad opening accurately turned out centrally with the shaft, andthe central opening of the piston-wheel has a collar, L, the

samepbeing formed on Athe, side opposite-theweb F', which' projects from this openingand forms a tight joint, which prevents water entering the cylinder except through the pistonarms M in the opening into the priming-pump.

The piston N of this pump is provided with valves, and the lower end ofthe barrel is-,also provided with a nap-valve, the arrangement `being the same as in the common lifting or suction pump. t,

More orless diiculry has always been experienced Vin starting rotary pumps. Water has had to be introduced by hand, aport-valve isrcquired, and a good deal of trouble anddelay have beenexperienoed before the rotary pump could be got fairly under way.

By means of the .primer H our rotarypump 4is immediately pnt in full operation; a stroke `or two of the piston N is suiiicient for that purpose. This motion is given by hand by means of the rod and handle 0.1?. v

Itwill be seen that the induction-pipe extends from the priming-pum p, and that all the water raised andthrownpasses through that pump. K

By -means oft-he web F' the center of the piston-wheel is left open on the opposite side, as

before stated. This mode of attaehin g the hollow piston-arms allows the water 'a free and unobstructed passage 'through the piston.

Letters `Patent dated July 25, 1865, were granted to us for -improvements in rotary pumps. `It is therefore not deemed necessary 2. In combination with arotating piston conto minutely describe the said pump only so far structed and operating as a-bove described, the :is relatesto ourpz'esent improvements thereon. collar L, substantially as and for the purposes Having thus described our invention, we specified.

claim as new and desire to secureby Letters GEORGE W. HEALD. Patent- LORENZO D. SISCO..

1. Prming or filling zt rotary pump by means Witnesses: v of n, lifting or suction pump connected therc-` PAYN BIGELOW,

with, substantially as shown und described. Y FRED A. MARVIN. 

